Heating system.



J. LOFTUS,

HEATING SYSTEM.

APPLICATION FILED APR.30, l9l7.

Patented Nov. 19, 1918.

invention being JOHN LOFTUS, OF ALBANY, NEW YORK.

' HEATING SYSTEM.

lpeolflcetion of Letters Patent.

Patented Nov. 19, 1918.

Application fi1ed April30, 1917 Serial N 0. 165,345.

T0 at whom it may concern.

Be it knownthat I, JOHN Lor'ros, a citizen of the United .States, residing at Albany, in the county ofAlbany and State of New York, have inventedcertain new and; useful Improvements in Heating Systems, of whi h the following is 'a'specification.

My invention relates to improvements in heating systems, the primary object of the to provide a generally improved combined h'otwater and steam heating' system, the various parts and features therein being so arranged and disposed as to efi'ect a positive and rapid circulation of the heat carrying and distributing Vehicle through the heating circuit in an auto,-

matically controlled manner as hereinafter' fully described. 3 Generally speaking my improved heating system comprises a suitable boiler- 01 generator provided with. a circuit of suit-.

able feed and' return pipes and radiators, together with a valved hy-pass interposed between and. communicating with the said pipes and connections tosaid generator for causing the fiow of the fluid through said pipes as well as automatically causing a cha-nge'in the level of the heated liquid and permitting steam and Water to pass alternately through the circuit upon changes in the water level and in the pressure in the generator and pipe system as will hereinafter more fully appear. 1

With the above mentioned 'and-otherends in View, the invention consists in the novel construction, arrangement, and combination of parts hereinafter described, illustrated in one of its embodiments in the accompanying drawings, and particularly pointed out, in the appended claims. 7 v

Referring tothe accompanfying drawings, forming a part of this speci cation, Figure '1, is a side elevation of one form or embodiment of my improved heating system, as

.applied toor installed in a building having three floors. V 3

Fig.2, is a detalled view, partly in side elevation and partly in section, of the improved boiler or generator with the outlet and inlet connections cooperatmg with the feed and return pipes of the improved system.

Fig. 3, a longitudinal sectional view taken on line 3-3 of Fi 1. Sunilar numerals of reference designate accordance. with any desired like parts throughout all the figures of the awings. I

The improved'heating system comprises a suitable I suitable form-or type, and is provided with a circuit of pipes comprislng, in the present instance. a feed pipe 2, and a return pipe 3. The return pipe 3, preferably includes, at suitable intervals. and at difl'erent levels, a plurality of cross or horizontally extending pip-es 2 the latter being provided with suitable radiators 2 and such horizontal pipes 2 and radiators 2*, may be provided with valves 2, but as this system is intended to operate as an open coil system, the valves 2, are normally open, and for this reason may be dispensed with. An adjustable .valve 3*, permits the escape of air t erethroug'h when fluid is being forced through the pipes by,

the generator-as for example, in startmg the improved system, the adjusting wheel 3", permitting of an adjustment of the tension of a "spring 3, on the valve 3? in an obvious and well known 3 pressure in the pipe system and forming a safety valve therefor. I

To control :the flow of hot water and steam through the pipes and radiators, a bypass 4 is interposed between, and is adapted to provide communication with, the feed and return pipes 2 and. 3, said by-pass 4 being provided with a controlling valve 4". When the controlling valve'4 is open, and return pipes'2 and 3, together with the lowermost pipe 2*, andthe lowermost radiator 2", form a hot Water circuit. while the'feed and return pipes-2 and 3, and the radiators above the by-pass 4, will form a steam heating circuit, the system being filled with water to apoint above the by-pass 4, as will later be moreparticujlarly described.

To cause water and steam topas's alternately through the ,feed and return pipes from the upper portion of the heater or boiler, as in the normal operation of the system, later described the, boiler is provided with a connection 5, having therein the separate conduits 5 and 5?, whose outlet and inlet portions 5* and 5", respectively, terminate at different levels, said outlet 5 terminating at a higher level within the boiler than said inlet 5*, the outlet 5 communicating through conduit '5, with the manner in the by-pass 4, and connecting feed ill supply pipe 2, and the inlet 5 iug through conduit 5 with the return pipe 8.

To permit the fluid in the teed and return pipes to liow in but one direction, the feed pipe 2 is provided with a check valve'2 and the return pipe 3 is provided with a check valve 3 The pressures in said feed and return pipes may be indicated by the pressure gages 6 and 7.

Before the system is put into operation, the heater is iilled with water to a point above the lower end operation, it will be understood that the water is normally above the level of said outlet portion near the top of the boiler, and a certain steam space is provided above the Water. When a certain steam pressure is reached, hot water will be forced out through the outlet o and into the feed pipe 2, and, if desired, all or a portion of such hot water may be passed through the bypass i,

and thence through the lower radiator and its connecting pipe 2 and down through the return pipe 3, returning to the boiler or geu orator through the inlet 5", and when the pressure of the steam and hot water in the circuit is sufficient to cause the level of the water to go below and thus to unseal or open the outlet 5 steam will pass through said outlet portion and into the circuit until such time as the water level in the boiler again rises and seals said outlet 5", whereupon, hot water will again be force 1 into the feed pipe. ll here a substantially balanced condition prevails, steam and hot water will alternately be passed into the fluid outlet. portion 5, and through the circuit of the system, as well known in the geyser system" to which this invention relates. ll hen it is desired to transform the feed and return pipes 2 and 3, above and below the by-pass into steam and hot water circuits, respectively, water is filled into the boiler and feed and return pipes to a point slightly above the bypass a, and the by-pass is fully opened by iully opening the valve 44, thus permitting hotwater to circulate through the feed and return pipes 2 and 3, and lower radiator 2 the water feeding from and returning to the boiler and through the by-pass as a hot water circuit, and steam being permitted to pass through the circuit above the bypass l, as a steam circuit.

If desired, the feed pipe 2, may be provided with a controlling valve 2 The generator 1 may be provided with a suitable inlet or feed water pipe 1 connected to a suitmesses communicattor, feed and returnpipes and radi oi the outlet 5*, and, in

able source of supply and provided with a control valve 1P,

From the foregoing description, taken in connection with the accompanying drawings, the operation and advantages or my invention will be readily understood,-;- i 5 l lavingthus described one of the embodiments ol my invention, what I claim and desire to secure by Letters Pater l. A heating system, conip nected in series therewith atdiff a connection having separate condu nating'wit'hin said generatoj cating"with said pipes, the i v inunicating with the feed pipe having it let. terminatingata higher level within generator tha'rrthe outlet the coir 'ui' inunicating with said return pip valved bypass communicat'ng" jv th feed and return pipes atlal ot the highest and lowestradiato 2. reheating system, comprisin tor, a circuit o'fteed and return Pipes 7 municat-ing there ivith, radiators and; connesting pipes communicating with said '1'" i turn pipe at different levels, aby-pas'sjinte posed between the feed and returnpipes at'a" point above the level of the lowermostradia tor forming upper and'lower'circuits whereby vapor will flow through-said upp f I cuit and heating liquid through' said"lower circuit and bypass when the heating liquid is maintained to or above the level of the lat ter in said system, ancl check valves in feed and return pipes betweenisaid by-pass" and generator to prevent retrogradennove inent of the heating liquid in said p'ip esi 3. A heating system, comprising a gene tor, a circuit. of feed and return pipes "haw ing their inlet and outlet portions vertically spaced in said generator, radiators and connecting pipes communicating"with saidreturn pipe at different levels, the uppermost of said connecting pipe-s provided with an escape valve, a valved bypass interposed he tween and communicating with said feed and return pipes at a level between that of the highest and lowest radiators whereby vapor may be caused to flow through the radiators above said by-pass and liquid through the radiators below said by pass.

in testimony whereofd have aiiixed my signature inthe presence of two witnesses,

JOHN LOFTUS:

a itnesses: 

